Property and Equipment Net By Type (Details) (USD $)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 52,156,000	$ 41,676,000
Less accumulated depreciation and amortization	(29,121,000)	(23,785,000)
Property and equipment, net	23,035,000	17,891,000
Depreciation expense	6,400,000	5,000,000	4,000,000
Furniture, fixtures and computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	12,984,000	10,873,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,628,000	3,044,000
Capitalized software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	35,544,000	27,759,000
Capitalized software still in development phase therefore not being amortized	4,100,000	4,400,000
Amortization expense, capitalized software	4,000,000	3,200,000	2,600,000
Accumulated amortization, capitalized software	18,700,000	14,700,000
Capitalized software, net, amortization expense, fiscal year maturity [Abstract]
2016	4,043,000
2017	3,411,000
2018	2,789,000
2019	1,966,000
2020	605,000
Thereafter	0
Capitalized software assets, net	$ 12,814,000